It would be helpful to list the building sizes on the structure menu of planets. When you are trying to pick and choose for space, it makes it harder. I find myself popping back and forth between the new and existing building menus a lot. Even a mouseover would help but a column would be better. Mouseovers are hard to use on at least this phone (Droid).

Sure. The space is a little cramped but I'm sure it can fit somewhere